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https://zoom.us/j/97837743078?pwd=p7xVG0Ic8ftpC0gtDzlwO3qVK9xnFf.1
Password: 897578
Abstract:
Monolithic Active Pixel Sensors (MAPS) are widely considered for applications in high-energy physics experiments, driven by increasingly stringent requirements on vertexing and tracking detectors. Compared to hybrid pixel detectors, monolithic pixel sensors offer significant advantages for tracking applications, including high spatial granularity, low material budget, and reduced power consumption. In addition, their fabrication using standard CMOS processes at commercial foundries enables lower production costs and higher yields.
The Birmingham group’s research on monolithic active pixel sensors focuses on two main areas: ultra-low material budget, high-precision tracking, and radiation-hard tracking using depleted monolithic active pixel sensor (DMAPS) technology. These developments target applications in the Silicon Vertex Tracker of the Electron–Ion Collider (EIC) and the MALTA sensor programme for future collider experiments.
The Silicon Vertex Tracker serves as the primary tracking system of the EIC. Its inner barrel consists of three layers of wafer-scale, ultra-thin, stitched monolithic sensors, while the outer barrel comprises two cylindrical layers with 116 staves hosting 744 large-area sensors. Both barrels build upon technologies developed for the ALICE Inner Tracking System upgrade programme, with further optimisations underway to meet the specific physics requirements of the EIC.
The MALTA family of DMAPS sensors is designed to satisfy the demanding conditions of future collider experiments, targeting radiation tolerance levels of up to 100 Mrad total ionizing dose and fluences exceeding 10^15 1MeV n_eq/cm^2, as required for the outer pixel layers of the ATLAS ITk upgrade.
This seminar presents an overview of the research activities on MAPS at the University of Birmingham, covering the design of the Silicon Vertex Tracker, ongoing sensor characterisation efforts in collaboration with the ALICE ITS3 groups, and simulation studies and test-beam measurements of MALTA2 sensors using the 180 GeV hadron beam at CERN SPS.
About the speaker:
Long is currently a postdoctoral research fellow at the University of Birmingham, having obtained his bachelor’s and Ph.D. degrees from Shandong University. His research focuses on monolithic active pixel sensors for high-energy physics. His main interests include high-precision tracking with ultra-low material budget sensors and the design of radiation-hard monolithic active pixel sensors.